hdm_configure_channel(9)

💅 NAME 💅

hdm_configure_channel — bestie, this is the one that receives channel configuration from the core ✨

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🎀 SYNOPSIS 🎀

int hdm_configure_channel (struct most_interface *iface , int channel ,
struct most_channel_config *conf );

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🦋 ARGUMENTS 🦋

• iface — the interface, like, the actual thing we're talking to 🫶
• channel — the channel ID, no cap, it's just an int and it's the one you want
• conf — the structure that holds the configuration information, she's literally carrying all the info 💖

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🌸 DESCRIPTION 🌸

Okay so listen 👑 — the attached network interface controller (NIC) supports a padding mode. Why? To avoid short packets on USB, which highkey increases performance because you get a lower interrupt load. It's giving efficiency, it's giving slay 💅

This mode is the default for synchronous data, and it can be switched on for isochronous data too. iykyk.

In case padding is active, the driver needs to know the frame size of the payload — like, it literally has to — in order to calculate the number of bytes it needs to pad when transmitting, or to cut off when receiving data. That's the whole vibe check of this function, fr fr ✨

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🌈 SEE ALSO 🌈

Kernel file ./drivers/most/most_usb.c, plus these iconic little functions and structs, all linked up 🧚:

• struct most_dci_obj(9)
• struct most_dev(9)
• drci_rd_reg(9)
• drci_wr_reg(9)
• get_stream_frame_size(9)
• hdm_poison_channel(9)
• hdm_add_padding(9)
• hdm_remove_padding(9)
• hdm_write_completion(9)
• hdm_read_completion(9)
• hdm_enqueue(9)
• hdm_request_netinfo(9)
• link_stat_timer_handler(9)
• wq_netinfo(9)
• wq_clear_halt(9)
• hdm_probe(9)
• hdm_disconnect(9)

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💀 That's the whole page bestie, go configure some channels, you've got this 🙈💜

Sign-off szn: this absolute queen of a page lives at ./drivers/most, dated October 2026, and it's the hdm_configure_channel(9) moment — periodt. 🎀✨🍓